Free messaging system software for linux

THCNET Message System project is a customizable PHP-enabled Web application which provides a moderated message system using a backend MySQL database.
Installation
download and install MySQL. download and install apache with mod_rewrite
and php4 or php5 compiled with the pspell libraries.
note: I use MySQL 5.0 and PHP 5.1 in development of THCNET, but it should
work with earlier versions.
do the following
modify the *.template *.css files to make things look how you want
modify the any and all source code as you see fit.
As of release 1.0.pre5 thcnet has an auto-installer/revision control
feature that makes the initial setup much easier.
copy all the files into your htdocs directory on your web server
open index.php in your browser. It will prompt you for values it needs
to perform the installation. Click on setup and it will create the
database for you and populate it.
Now that you have THCNET setup, the first task will be to apply as a new
user. The first user to apply will be given sys-admin rights.
Now you can customize features by clicking on the Admin link to the
left.
Enhancements:
- This release adds the ability to further control the system based on policy maps.

Secure Messaging is a Web-based, alternative mail system for sending and receiving messages.

Use secure messaging to send and receive messages from a alternative web-based mail system. Using the secure messaging system no actual mail is transmitted through any 3rd party servers.

Only an optional message notice is sent to the recepient, the user needs to visit the site in order to read the message.

Normal SMTP mail can hit multiple servers and can possibly be read, stored, or changed anywhere within the process.

Setup secure messaging on an SSL enabled website to enhance the privacy even more.

Nelisys project is Open Source Web-based Management System, to manage and monitor system and network including Router, Switch, Wi-Fi Access Point, Server, Networking services, etc.

There are performance and fault management function.

All System Info is a system info SuperKaramba theme. Simple english version...
It shows:
- System Info
- CPU usage
- Network Usage
- Memory Load
- HDD usage

Learning Management System allows users to manage online learning classes.
It allows them to set up classes, create assignments online, and send messages to students from within the system for tracking.
Learning Management System is a simple system to move academic classes onto the Web in order to reach a larger audience.
Enhancements:
- This release fixed two bugs in the library file system.

System-CoW is a system monitoring SuperKaramba theme.

You must have installed hddtemp and all i2c sensors in kernel to have this script working!

You must launch:

hddtemp -d /dev/hd[abc] // if you have 3 disks!

to have temperature working!

For gentoo add a line to /etc/conf.d/local.start to load the command line at startup!

Exception::System is the exception class for system or library calls.

SYNOPSIS

# Loaded automatically if used as Exception::Bases argument
use Exception::Base
Exception::System,
Exception::File => { isa => Exception::System };

try Exception::Base eval {
my $file = "/notfound";
open FILE, $file
or throw Exception::File message=>"Can not open file: $file",
file=>$file;
};
if (catch Exception::System my $e) {
if ($e->isa(Exception::File)) { warn "File error:".$e->{errstr}; }
if ($e->with(errname=>ENOENT)) { warn "Catched not found error"; }
}

This class extends standard Exception::Base with handling system or library errors. The additional fields of the exception object are filled on throw and contain the error message and error codes.

FIELDS

Class fields are implemented as values of blessed hash.

errstr (ro)

Contains the system error string fetched at exception throw. It is the part of the string representing the exception object. It is the same as $! variable in string context.

eval { throw Exception::System message=>"Message"; };
catch Exception::System my $e
and print $e->{errstr};

errstros (ro)

Contains the extended system error string fetched at exception throw. It is the same as $^E variable.

eval { throw Exception::System message=>"Message"; };
catch Exception::System my $e and $e->{errstros} ne $e->{errstr}
and print $e->{errstros};

errno (ro)

Contains the system error number fetched at exception throw. It is the same as $! variable in numeric context.

eval { throw Exception::System message=>"Message"; };

errname (ro)

Contains the system error constant from the system error.h include file.

eval { throw Exception::System message=>"Message"; };
catch Exception::System my $e and $e->{errname} eq ENOENT
and $e->throw;

METHODS

stringify([$verbosity[, $message]])
Returns the string representation of exception object. The format of output is "message: error string".

eval { open F, "/notexisting"; throw Exception::System; };
print $@->stringify(1);
print "$@";

Off-the-Record Messaging is a Pidgin plugin that allows you to have private conversations over instant messaging by providing:
Encryption
No one else can read your instant messages.
Authentication
You are assured the correspondent is who you think it is.
Deniability
The messages you send do not have digital signatures that are checkable by a third party. Anyone can forge messages after a conversation to make them look like they came from you. However, during a conversation, your correspondent is assured
the messages he sees are authentic and unmodified.
Perfect forward secrecy
If you lose control of your private keys, no previous conversation is compromised.
Enhancements:
- Translations for English, Dutch, Spanish, French, Slovak
- Added option to not log OTR conversations
- Large messages are now fragmented transparently instead of failing
- Removed "view secure session id" and "verify fingerprint" options from the OTR button menu. Added "authenticate buddy" option in its place. This new option allows you to authenticate your buddies by entering some secret that only the two of you know, rather than by using a long user-unfriendly sequence of hex characters. [The old "verify fingerprint" dialog is still available via an "Advanced..." button from the new "authenticate buddy" dialog.]